Working at the salon often means standing on your feet the whole day while cutting away hair to the satisfaction of the clients. After a while, the hands and arms can get tired from all the work. Using comfortable hair stylist scissors can help delay the onset of fatigue.
If you find yourself getting tired quickly, then look for a smaller pair of hair stylist scissors. Go as low as you can in size without sacrificing control. You may also want to seek out models with lightweight but durable materials.
The type of handle is important as well. Try out different grips at the store or ask your co-workers if you can borrow their scissors for a while to see if you will find them easier to use. If you use less effort when cutting, then you should be able to work longer without problems.